Improved coal-machine for mining



W. W. GRIBR & R. H BOYD. GOAL MACHINE PoR MINING.

No. 50,577.l Patented Oct. 24, '1865.

UNITED STATES PATENT. OFFICE.

w. W. GEIEE AND E. H. BoYD, 0E HUI/rom PENNSYLVANIA.

IMPROVED COAL-MACHINE FOR MINING.-

Specification forming part of Letters Patent No. 50,577, dated October 24, 1865.

To all 'whom'it 'may concern Be it known that we, GRIER andvR. H. BOYD, of Hulton', in the county of Allegheny and State of Pennsylvania, have invented certain new and. useful Improvements in Machines for Mining Coal; and we do hereby declare that the following is a full, clear,'and exact description thereof, reference being had to the accompanying drawings and the letters of reference marked thereon,-making'part of this specification, in which- Figure 1 is a 1rear elevation; Fig. 2, a perspective View of the frame on which the machine is mounted; Fig. 3, a plan view, looking from below; Fig. 4, a view of one of the gear-` Wheels detached. Fig. 5 is a top-plan View of themachine detached from its frame, and Fig. 6 is a front-end view of the frame and the bit- Astems with'the'ir rests.

-The nature of our invention consists in a novel arrangement of mechanism foroperating a seriesot' bits or boring-tools for cutting or mining coal, and in anovel'method of mounting,vadjusting, and operatingthe same. a

To enable others skilled in the art to construct and use the same, we will proceed to describe it.v l

Aprepresents-the frame, which is mounted on the flanged wheels a, attached to the shafts B, one of said shafts being attached at each side of the frame A, as clearly shown in Fig. 2.

A swinging frame, C, is attached-to one of the shafts B at one end of the frame A, and in the upper portion'of said frame C is mounted 4a gear-wheel, D, having a pulley secured toit,

around which and the shaft B a cord or chain, l), passes. When the frame C is swung into a vertical position, as shown in Fig. 2, the wheel D is thrown into'gear with the main drivingwheel H, by which motion is transmitted to the truck-wheels a, thereby moving the machine to the right or left, according as the wheel H may be made to rotate in one or the other direction, it being understood that the truck-Wheels a run upon tram-rails laid for that purpose.

` On the inner sides of the frame A', both at the sides and also at one end are secured the inclined blocks c, and resting thereon are correspondin g wedge-shaped blocks c', these blocks being provided with a tongue and groove to keggthem in place and prevent the .blocks c fr "slipping oft'. Attached to the sliding blocks c are cords dwhich "passarcund and are wound upon the shafts a', tothqupper end of ywhich ratchetwheels a* are, secured, and which areheldin place by .thepawls b. -(See Fig. 5.)- The frame E,u.ponwhich ythe workin g mechanism is mounted, is-niade ot' such a size as to fit within the frame A and rest upon the blocks c. Itis obvious that by this arrangement the frame E, with its mechanism, can Ybe raised at pleasure by sim ply-turning the shafts a', which will wind up the cords d, and thus draw the wedges c up the inclined faces ot the stationary blocks-0. Another frame, consistiugof the cross-bars I I, uprights K K, and upper crossl' bars, J J, is provided for supporting the'oper;v ating mechanism,- and this latter frame s-so mounted on the frame E that it, with its ruech anism, can be moved to and fro thereon longit-udinally of said frame E. 1n the upper ybars, J J, of this movable frame the shaft'L'of the driving-wheel 'IEI- has its bearings,xand below it, in the lower cross-bars, I I, are mounted a ries'of rotating shafts or spindles having gearwheels attached totheir rear ends, and so arranged as to be Aoperated by the wheel H, as shown in Fig. 1, the front ends of these shafts being shown byvt' i, &c., of Fig. 3,'and their main portion being shown in Fig. 5.

vThe manner of arranging this gearing is as follows: The shafts .i2 and i3 areprovided with a gear-Wheel, k, so arranged as to engage with the driving-wheel H,andin frontof the wheels `l70,' on the same shaft, vare mounted similar wheels, of less diameter, as shown in dotted lines in Fig. 1. These latter wheels gear into and drivev similar wheels attached to the adjoiningshafts t', theright-hand shaft, t3, driving a shaft, t', both 'on its right and left, while the left-hand shaft, t2, only drives the shafts 'i on its left, the reason for'which arrangement being that thus each series of three drills is driven direct 'fro-m the main wheel Hindependent of each other. Itis obvious that this precise arrangement of gearing need not be strictly adhered toin all cases. Nor do We wish to be understood as confining ourselves to the construction'of the movable frame here n w r Astructionand arrangement that shall furnish relative positions will answer the purpose.

in described, it being obvious that any conthe necessary support or bearings for the mechanism and bring the parts in their requisite A screw-shaft, F, is mounted in the frame E, longitudinally thereof, and underneath the movable frame, said shaft F being clearly shown iu. Fig. 3. A gear-wheel'. G,(shown detached in Fig. 4,).is vmounted loosely on the shaft F, this wheel Gr being provided with a key or feather, e', which ts into a groove, l, cut in shaft F, whereby the wheel G is prevented from turning loosely on said shaft. By this yarrangement it will be seen .that when motion is applied to wheel Gr it and the shaft F will be caused to rotate together, the wheel Gr being at the same time left free to move forward orbackward on said shaft. rIlhe wheel G turns' freely within the collar'vor frame m, which secures or keeps it in close contact withV thecross-bar I of the movable frame, while at the same time not interfering with its rotation.

Resting'on the frame E are two movable cross-bars, ,n n. rIo the bar n, on one side of shaft F, is secured the one half, h, of an open nut, having an internal 4screw-thread to correspond with that on shaft F; To the otherbar, fn', is attached the corresponding half, h', of said nut. New, it-will bc-seeu that by moving the bars a and fnin the directions indicated by the black arrows thetwoha'lves of thcnut will be made to close upon the shat'tF,'-andthat consequently, it' the shaft F b e rotated in one direction, the nut, andwith it lthe movable frame, to which it is attached by .means of the bars n u', will be moved forward, and that by reversing the motion of shaftF the nut and movable frame will be moved backward. By moving the bars u and n in the direction indicate .the red arrows the unt will be nnloosened from the shaft F, when the nut and movable frame can be moved byother means and independently of shaft F,whether the latter be rotating in one or the other direction, or even if it be stationary. rIhe nut is opened or closed at pleasure by means of the shaft e, which has its upper bearing in the bracket o, secured to the upright K, its lower end being forked, and having one prong working in a slot in bar n, and the `opposite prong Working in a similar slot in bar n', as shown in Fig. 3.

A crank or other suitable means should be supplied for operating the shaft e.. y v

The' wheel Gr is driven by a pinion on shaft 3, which pinion is'ocated in front of wheel 7c on said shaft. As the wheelG is thus rotated the screw-shaft F -is also caused to rotate by means of the feather e', working in theslot l, as previously described, and it is obviousthat if the nut be closed on the shaft F whilethe latter is thus made to rotate, the nut will be fed or moved along said shaft, and will carry the movable frame and operating mechanism forward with it. It is by this means that we provide for feeding the series of cutting or boring bits (secured to the front end of shafts t' 6,

&c.) into the coal-bank, as' they cut away the coal by their rotation.

Upon the front portion ot shaftLis mounted a drum or collar, T, so arranged that when shoved back by' lever p, as shownin Fig. 5, it will engage with a clutch or key on shaft L, andbe made to rotate therewith. A cord, 1', attached to the rear cross-bar, f, of frame E, (see Fig. 3,) extends forward and passes over a pulleyT or eye.y secured to the front bar, I, of the movable frame, from whence it passes up andhasits other end attached to the collar T. It will thus be seen that when the nut is unloosed from shaft F and the collar T is thrown into connection with the shaft L the cord r will be wound upon the collar, and thereby draw the frame, with it series ofbits, Ste., back, after which the machine canbe moved along, ready for another cut.

Atthe rear end of the main frame A are secured two slotted standards, R, one near each end of the cross-bar of said frame, as shown in Figs. 1, 2, and 5. The projecting ends tof the frame E, Fig. 3, tits into the slots in the standards R. A clamping-lever, s, pivoted to one arm of the standard R, is then turneddown so as to embrace the other arm of said standard and press them together, thereby holding the frame E steady and rmin its place while the bits are being operated, these parts beingv clearly shown in Figs. 1, 2, and 5J Upon thev front., endet' frame E is located a cross-bar,P, which serves asia rest to support and steady the bits andtheir stemswhile boring', as shown in Fig. 6. A metal bar, U, .is attached at each end to the cross-bar I), as shown in Fig. 6, which serves to hoId the bits from bending or being raised'up, and thus the bars P and U form a guide to steady and direct the bits while boring.

The bits w, which cut the coal, are screwed or otherwise fastened into the end of a rod, o', which latteris, in turn, secured to the front end of the shafts i t', as shown in Fig. 5. .By this method of attaching the bitswe are enabled to dispense with the long twisted stem shown in our former patent, whereby we greatly eheapen the manufacture of the bits, and in case one becomes broken or injured it can be readily removed by detaching the bit from the stem fu; or, if it is embedded in the coal, the bit, with the stem v, can be detached from the shaft t by simply moving the movable frame back a few inches. l I

It will be understoodthat we' propose to use with this machine the 'bit already patented to us, and that the machine isto be operated by steam or compressed air, the same as in the case of our machine Vpatented July 12, 1864.

In transporting our machine in and out of the pit or mine we mount-` or load it upon a lowtruck-earprovidedtbrthatpurpose. When it has arrived at the point where it is intended to be used it is removed from the truck and placed on the movable rail or tram way laid parallel with the face of the vein that is to be out or mined. When the vein has been mined removed, the track is moved forward near the face of the vvein, and the operation repeated, as before.

Having thus fully described our invention, what we ciaim is' l. The screw-shaft- F, provided with the groove Z, in combination with the gear-wheel G, provided with the feather e', arranged and operating in connection with the movable-frame, es and for the purpose herein set forth. 2. The, drum T, mounted on shaft L, and. cord r, arrun ged to operate the movable frame, as shown and described. V

3. The Wedge-shaped blocks o', in combinationwith the stationary blocks c, arranged to operate substantially as shown, for the purpose of adjusting the frame E.

4. The slotted standard R, in combination with the cam-levers s or their equivaients, for

the purpose of holding the frame E, as show and described. 4

5. The arrangement of gearing, as shown, by which each series of three drills is operated independent of the others.-

6. Attaching the bii's to the detachable stem or mandrei o, as shown anddescribed.

7. Supporting the bits bylneans ofthe guidehars P and U, arranged as shown and described.

8. The swinging frame U, provided with the gear-Wheel D, arranged to operate in combination with the operating mechanism, and the truck-Wheels a, for the purpose of moving the machine, as herein sei: forth.

W. W. GRIER. R. H. BUYD. Witnesses z A. S. NxoHoLsoN, JOHN N. MCULOURY. 

